Do not try to make your headline so short that it fails to express your idea properly. It's more important to say what you want to say - even if it takes 20 words to do than make it short and fail to express your idea.
John CaplesRemember that the reader's attention is yours for only a single instant. They will not use up their valuable time trying to figure out what you mean.
John CaplesThe best headlines are those that appeal to the reader's self-interest, that is, headlines based on reader benefits. They offer readers something they want - and get from you.
John Caples